Branch-pipe valve for dust-collecting systems.



No. 840,894. PATENTED JAN. 8, 1907;. w. E. ALLINGTON.

BRANCH PIPE VALVE FOR DUST COLLECTING SYSTEMS.

APPLIOATION FILED JULY 26. 1900.

UNITED sTATnSL PATENT OFFICE.

WILLIAM E. ALLINGTON, OF SAGINAW, MICHIGAN. BRANCH-PIPE'YVALVE FOR DUST-COLLECTING SYSTEMS.

Specification of Letters Patent.

Patented J an. 8, 1907.

Application filed July 26, 1906. Serial No. 327,808.

To all w7zipm'it .may concern.-

Beiit known that 1, WILLIAM E. ALLING- TON, a citizen of the United States, residing at Saginaw, in the county of Saginaw and 'State of Michigan, have invented certain new and useful Improvements in- Branch-Pipe Valves for Dust-Collecting Systems, of.

which the followin is a specification.

M Invention re ates to Improvements In regu atin -valves for dust-collecting systems, an has for'its object to provide a valve for association with an angular joint for main and branch pipes which is susceptible of adjustment to most effectively and advantageously adjust theeifective area of communication of the-branch pipe with the main pipe for the purpose of va ing at convenience. the suctlon In' a branc to a main @IIOtlO'Ii-Pl e.

In the rawin'g s, Me 1 illustrates a portion of a dust-collection blow ipe system shown in plan. Fig; 2 is an enarge'd detail in plan of one of the valved pipe-joints. Fig. 3 is a transversesection in the illian of the joint of the structure shown in 'g. 2;

Fig. ,4 is a sectionon line 4 4 of Fig. 3. v Fig.

5 is a section on line 5 of Fi 4. Throughout the drawin sIike numerals of reference refer always to ike parts.

In the drawings, 10 indicates a fan, with the eye whereof communicates the main suction-pi ie 11, to which extend at various points ranch pipes 12 12. with the usual practice the area of the main suction-pi e 11 is at every point properly positione in relation to the combined areas of the pipe and branches be 0nd it. The

communication of each branc ipe 12'with the main suction-pipe 11 is e ected at an acute angle.

Each joint structure, generally indicated 1 as 13 on the-drawings, comprises ;a section of piping 11, which constitutes part of the main suction-pipe 11, and the section 12, which constitutes part of the branch pipe 12,

. these two pipe-sections being connected together in any suitable manner for normallyopen communication.

For clear distinction I will hereinafter refer to that plane which is common to the In accordance,

In the branch member 12 of the joint I provide a slide-valve, taking into the branch pipe from its heel side and preferably ar-" ranged in approximate para elism to the main pipe, said slide being arranged at ri ht angles to the plane of the joint and pre erab y having its forward end of such configurat1on as to reduce the effective area of the portion of the branch pipe above the plane of the joint to a greater-extent than the re.

duction eifected in the portion of the branch pipe below the plane 0 the joint.

Specifically, in the drawin s 14 indicates a guide structure referab y, comprising plates 15 of suitable ength bolted together,

as M16, and shaped to provide an interior slideway throughout their vertical length, said structure 14 being suitably connected by rivets or otherwise, taking throu h a flange 17 of the guide to the heel side 0 the branch-pipe section 12- adjacent the heel (1 of the joint. The guide structure. 14 is preferably arranged in parallelism to the pipe.

section 11, and its longitudinal guideway registers with a suitable slot in the branch pipe member 12'. Through the side plates 15 of'the guideway are-made adjacent the top and bottom suitable apertures 18 for a pur ose-to be described.

e valve proper (indicated as 19). com prises a flat plate adapted to slide in the guideway' provided by the structure-14 and through the aperture in the heel side of the branch pipe to regulate the effective or openarea .of said branch pipe at approximately its Pro point of juncture with the main pipe. erably the front or first entrant edge of.

the valve 19 is cut away, as shown at 20, on

an angle oblique to the plane'of the joint, said slide'being so arranged that its nose,por-. tion 21, of less width, enters the area of the branch ipe above the plane of the joint before t e valve-plate begins to cut off the portion of the branch-pipe area below the plane of the joint. By this arrangement, it

will be seen, the lower portion of the toe side of the joint is constantly maintained free or v 0 en, the cut-off action of the valve taking ace wholly in the. upper heel side of the branch pi e. The vaIve-plate is provided with a series of apertures 22, positioned for successive the guide for the reception ,of a staple 23 or any other suitable latching, looking, or sealing device for temporarily or permanently ;registration withone ofv the apertures 18 in IIO maintaining. the yalve member against movement in its (guide. Thus when once properly positione the valve may be secured in position against accidental movement.

In the operation of a dust-collecting system, such as is commonly installed in woodworking plants and the like, my improved valve plays a most important part in-the question of economy or operation. In the installation of every such system the ap-' portionment of the piping areas to result in the application of the necessary suction for tems the operation of different machines in difl'erent positions is always a nice one, and, furthermore, experience demonstrates that the suction requirement of machines commonly used in connection with dust-collector sysis apt to vary inconsiderable degree with thecharacter of material handled and the like. The equipment of a system with valves, as herein shown, enables at any time a most effective adjustment of the effective areas of the different branch pipes to secure proper proportioning of the suction effect at the different oints of material-supply.

. It-will be 0 vious that in any branch-pipe,

by moving. the valve inward the effective tion to the esired point prevents wasteful expenditure of energy now ordinarily sufi'ered in creating in said branch pipe at all times the maximum suction effect which may ever be required. a I

The construction of valve herein shown, which operates u on the up. er heel side of the branch pipe, have foun to be most advlantageous, as I have empirically discovered" t at the material inflow through the pipe tends always to travel out of the branch ipe into a main pipe, alo the branch pipe, so t at the'arrangement herein shown. cuts'do'wn'the efl'ective pipe "area without interfering with the flow of material.

the lower toe si e of It will further be apparent that the arrange'ment shown positions. the side of the valve proper toward which the material flows at an obtuse angle relative to the 'axis of the branch pi e, which further insures that the matena will not find lodgment against the valve. i

While I have herein described in detail a valve structure which I have found in practice to beefficient, it will be apparent that many changes might'be made in the specific construction without departure from the spirit and scope of my invention.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is

1. In combination with an angular joint for main and branch pipes, in a dust-collecting system, a slide-valve for thebranch pi e takin" thereinto from the heel side of t e branc pipe.

2. In combination with an angularjoint of main and branch pipes, in a dustcollecting' system, of a slide-valve for the branch pi e takin thereinto from the heel side of t e branc ll p'pe at an obtuse angle to the inner -surface-=,of-the heel side of'n' sid pipe.

3. The combinatio with, a piping-join? comprising a main-pipe part and a branchpipe part communicating therewith at an acute angle, of a slide-valve entering the branch .pipefrom its heel side, and at its end shaped to enter the area of the branch pipe above the fplane of the joint before it enters the. area 0 said branch pipe below the plane of the joint.

4. The combination with a piping-joint comprising a main-pipe part and a branchpipe part communicating therewith/at an acute. angle, of a slide-valve having an inclined en 5. The mombination with a piping-joint comprisinga main-pipe part and a branch! pipe part commumcating therewith at an acute angle, of a slide-valve entering the branch pipe from its heel side, and meansfor retaining the valve in adjusted position.

In testimony whereof I hereunto set my hand in the presence of two witnesses.

WILLIAM E. ALLINGTON.

In presence of GEO. T. MAY,'J1., MARY F. ALLEN. 

